David i



(No Model.)

D. I. KUHN. Dog Power Machine.

No. 233,420. Patented 0-c t. I9, 1880.

Fig.1

2, 1 I i Z (2 e Wii nesses In van for N,PETERS, PHOTO-LITHOGRAPHER,WASHXNGTON, D c,

' entire machine.

UNITED STATES PATENT OFFICE.

DAVID I. KUHN, OF PENN TOWNSHIP, ALLEGHENY COUNTY, PA.

DOG-POWER MACHINE.

- SPECIFICATION forming part of Letters Patent No. 233,420, datedOctober 19, 1880.

Application filed August 16, 1880. (No model.)

for the purpose of driving a churn. I attain this object by themechanism illustrated in the accompanying drawings, in which Figure 1 isa vertical section through the Fig. 2 is a top view of the machine witha part of the tread-wheel broken out, showing the operation of partsunderneath.

Similar letters refer to corresponding parts throughout both figures.

The sill A and the posts 0 and D form the main frame, and together withcross-sill d and posts 6 andf constitute the whole frame-work of themachine.

g is an adjustable bar, with a lever, h, for adjusting the pitch orslope of tread-wheel B, the shaft of which passes down through lugs onthe bar g, and about which the tread-wheel rotates.

The lever his secured in place by a pin, r, passing through it into post0, a number of holes being provided in the same for adjusting the leverin different positions.

The tread-wheel B is constructed with two cross bars or arms, '5, halvedtogether at the center.

The rim j of the tread-wheel is formed of the bent-wood fellies ofvehicle-wheels, (wagon, buggy, or sulky fellies,) to which the ends ofarms i are secured.

The diagonal pieces are notched into under side of arms 2, and thetreadway is formed by nailing on the outer rim and the diagonal piecestapered slats radiating outward from center of wheel.

A railing is formed around inner edge of treadway by the standards I,with a ring or hoop, m, passing around through holes near their upperends. This railing is for the purpose of compelling the animal to walkout near the edge of wheel B.

The rim of tread-wheel B is made to rotate the roller and fly-wheel N nby friction produced by the weight of the animal on the treadwheel.

Through the roller and fiy-wheel N n a shaft, E, passes, having itsbearings in the posts 6 and f. 0n the inner end of this shaft is acrank, 0. To the wrist or pin of this crank one end of the pitmanp isattached, the other end working in a slot with a pin in the lower end ofhanger a, the hanger a and workingarm I) being framed together at c, andsecured in the angle with a brace, s.

The working-arm b is pivoted on a pin, t, secured to post 0, the otherend having a slot and pin for attaching the churn-dasher to.

It will be seen the bearings of arm I), hanger a, and pitman p are inthe same vertical plane with each other and parallel to the side of mainframe of machine, thus bringing the principal strains of the workingparts of machine on the strongest part of the frame.

Through the slot in the lower end of the hanger a are a number of holesfor adjusting the pitman p, in order to give the churndasher a shorteror longer stroke, as may be desired. The numbers in connection withthese holes are intended to indicate the number of gallons of milk which(the churn being of a given dimension, and the pitman in a given hole)it would be suitable to churn.

I am aware that horse or dog powers have been made or described havingan adjustable rotary tread-wheel. I therefore do not claim such as myinvention; but

What I do claim, and desire to secure by Letters Patent, is

1. The arrangement of crank O on the inner end of the shaft E, the wristor pin of which is brought in the same vertical plane with theworking-bearings of the arm I) and the hanger a, and in combination withthe side of main frame of the machine, substantially as described.

2. The hanger 0, provided at the extremity with perforations and agraduated scale, substantially as described, for the purpose set forth.

DAVID I. KUHN.

Witnesses I HENRY W. ARMSTRONG, NANCY HAMILL.

